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SUMMARY:Operator Algebras: Approximation\, Rigidity and Dynamics\, Paris
DTSTART:20260914T063000Z
DTEND:20261204T153000Z
DTSTAMP:20260715T074900Z
UID:indico-event-14373@indico.math.cnrs.fr
CONTACT:OA2026@ihp.fr
DESCRIPTION: \nThematic trimester programme with short courses\, seminars
  and workshops\nSeptember 14th to December 4th\, 2026 at the Institut Henr
 i Poincaré\, Paris\nREGISTRATION IS FREE AND MANDATORY\nClick here to reg
 ister for the trimester\nIMPORTANT WARNING:  Scam / Phishing / SMiShing 
 ! Note that ill-intentioned people may be trying to contact some of partic
 ipants by email or phone to get money and personal details\, by pretending
  to be part of the staff of the conference center.  IHP and the organizer
 s will NEVER contact you by phone on this issue and will NEVER ask you to 
 pay for accommodation/ board / possible registration fee in advance. \nDe
 adline for financial support request is March 15\, 2026\nOperator algebras
  are self-adjoint subalgebras of the bounded operators on a Hilbert space 
 and divide into two main classes: C∗-algebras and von Neumann algebras\,
  according to whether one demands that they are closed in the norm topolog
 y or the weak operator topology. When one first meets these algebras\, the
 y might look quite similar\, but they have different natures as exemplifie
 d by the commutative case: via the Gelfand transform\, abelian C∗-algebr
 as are algebras of continuous functions vanishing at infinity on a locally
  compact Hausdorff space\, while abelian von Neumann algebras are essentia
 lly bounded measurable functions on a measure space. These flavours persis
 t in general. Topological concepts such as dimension and invariants such a
 s K-theory pervade the study of C∗-algebras\, while measure-theoretic st
 yle methods are often used to study von Neumann algebras.\nThe long themat
 ic program OA will focus on operator algebras and its still evolving inter
 actions with ergodic theory\, topological dynamics\, discrete subgroups of
  semisimple Lie groups\, analytic\, ergodic and geometric group theory\, q
 uantum information theory and random matrices.\n \nIntroductory school:\n
 September 14th to 18th\, 2026 — Operator Algebras and interactions at IE
 SC (Cargèse)\nThe introductory school will feature four mini-courses. The
  standard format will be four 1h long lectures for each mini-course. \nTi
 tles and Abstracts: here\n\nYves Benoist (CNRS & Université Paris-Saclay)
 \nShirly Geffen (University of Münster)\nAmine Marrakchi (CNRS & Ecole no
 rmale supérieure de Lyon)\nWilliam Slofstra (University of Waterloo)\n\n
  \nA separate (free) registration is needed for the school:Link to regist
 ration\nWorkshops:\nSeptember 28 to October 2 — Workshop 1 - Operator A
 lgebras: Groups and Dynamics\nOctober 26 to 30 — Workshop 2 - Operator A
 lgebras: Matricial Approximations\nNovember 30 to December 4 — Workshop 
 3 - Operator Algebras: Rigidity and Classification \nLecture series:\nLec
 ture series will be held in amphitheater Darboux in IHP. The standard form
 at will be three 2h long lectures during one week for each lecture series.
  \n\nAdrian Ioana (University of California at San Diego): Week of Septem
 ber 21\nUri Bader (University of Maryland): Week of October 5\nTatiana Shu
 lman (Chalmers University of Technology): Week of October 12\nJamie Gabe (
 University of Southern Denmark): Week of November 23 (tbc)\n\nOrganising c
 ommittee:\n\nCyril Houdayer (Ecole normale supérieure)\nMikael de la Sall
 e (CNRS\, Université Claude Bernard Lyon 1)\nStuart White (University of 
 Oxford)\n\nScientific committee:\n\nNadia Larsen (University of Oslo)\nMag
 dalena Musat (University of Copenhagen)\nGilles Pisier (Sorbonne Universit
 é\, Académie des Sciences)\nStefaan Vaes (KU Leuven)\n\n \nBack to the 
 thematic trimester main page \n------------------------------------\nProg
 ramme coordinated by the Centre Emile Borel at IHP\n \nSorbonne Universit
 é\, CNRS\n\nhttps://indico.math.cnrs.fr/event/14373/
LOCATION:Amphitheater Darboux/Hermite (IHP)
URL:https://indico.math.cnrs.fr/event/14373/
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